Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, List#set, List#setSize, List#setIn, List#updateIn, and the functional set, setIn, and updateIn mishandle an index or size in the range 2 ** 30 to 2 ** 31 in setListBounds in src/List.js, causing an empty List to enter an uncatchable infinite loop, a populated List to allocate without bound until process abort, or setSize to silently wrap large values. This issue is fixed in versions 4.3.9 and 5.1.8.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:74503 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

    * rubygem-foreman_remote_execution: command injection in job invocations via effective_user parameter     (CVE-2026-12405)
    * foreman: unauthenticated information disclosure via provisioning token validation flaw (CVE-2026-12423)
    * foreman: command injection in foreman-rake errors:fetch_log via request_id parameter (CVE-2026-12540)
    * foreman: command injection in foreman-rake database tasks (CVE-2026-12541)
    * foreman: command injection in foreman-tail (CVE-2026-12542)
    * foreman: SSTI and insecure deserialization in foreman-rake configuration (CVE-2026-12544)
    * rubygem-hammer_cli: command injection via insecure editor invocation (CVE-2026-12545)
    * python3.12-dynaconf: Dynaconf: Arbitrary code execution via Server-Side Template Injection     (CVE-2026-33154)
    * yggdrasil-worker-forwarder: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal     (CVE-2026-33818)
    * yggdrasil-worker-forwarder: Golang MIME: Denial of Service via maliciously-crafted MIME header     (CVE-2026-42504)
    * nodejs-sanitize-html: PostCSS: Information disclosure and denial of service via crafted CSS input     (CVE-2026-45623)
    * python-sqlparse: sqlparse: Denial of Service via quadratic CPU consumption in SQL parsing     (CVE-2026-54284)
    * python3.12-sqlparse: sqlparse: Denial of Service via quadratic CPU consumption in SQL parsing     (CVE-2026-54284)
    * rubygem-katello: SQL injection in Registry Proxy via labels (CVE-2026-56097)
    * rubygem-katello: improper authorization logic allows resource enumeration (CVE-2026-56098)
    * yggdrasil-worker-forwarder: Go html/template: Cross-Site Scripting via pathological input     (CVE-2026-56858)
    * yggdrasil-worker-forwarder: golang net/url: Denial of Service from quadratic complexity in path     resolution (CVE-2026-56860)
    * yggdrasil-worker-forwarder: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages     (CVE-2026-56862)
    * nodejs-connected-react-router: Immutable.js: Denial of Service due to mishandling of large index values     in List operations (CVE-2026-59879)
    * nodejs-sass: Immutable.js: Denial of Service due to mishandling of large index values in List operations     (CVE-2026-59879)
    * python-sqlparse: sqlparse: Denial of Service via inefficient SQL parsing (CVE-2026-59893)
    * python3.12-sqlparse: sqlparse: Denial of Service via inefficient SQL parsing (CVE-2026-59893)
    * python-sqlparse: sqlparse: Denial of Service via quadratic CPU consumption in comment grouping     (CVE-2026-71491)
    * python3.12-sqlparse: sqlparse: Denial of Service via quadratic CPU consumption in comment grouping     (CVE-2026-71491)
    * nodejs-css-loader: nanoid: Predictable ID generation due to integer overflow (CVE-2026-73086)
    * nodejs-sanitize-html: nanoid: Predictable ID generation due to integer overflow (CVE-2026-73086)
    * nodejs-compression-webpack-plugin: fast-uri: Server-Side Request Forgery via repeated hostname percent-     decoding (CVE-2026-75899)
    * nodejs-mini-css-extract-plugin: fast-uri: Server-Side Request Forgery via repeated hostname percent-     decoding (CVE-2026-75899)
    * nodejs-webpack: fast-uri: Server-Side Request Forgery via repeated hostname percent-decoding     (CVE-2026-75899)
    * nodejs-compression-webpack-plugin: fast-uri: Host confusion via skipped IDN canonicalization     (CVE-2026-75931)
    * nodejs-mini-css-extract-plugin: fast-uri: Host confusion via skipped IDN canonicalization     (CVE-2026-75931)
    * nodejs-webpack: fast-uri: Host confusion via skipped IDN canonicalization (CVE-2026-75931)
    * nodejs-compression-webpack-plugin: fast-uri: Server-side request forgery via malformed IPv6     normalization (CVE-2026-75975)
    * nodejs-mini-css-extract-plugin: fast-uri: Server-side request forgery via malformed IPv6 normalization     (CVE-2026-75975)
    * nodejs-webpack: fast-uri: Server-side request forgery via malformed IPv6 normalization (CVE-2026-75975)
    * python3.12-gitpython: GitPython: Arbitrary file read via TagReference.create() (CVE-2026-78679)
    * rubygem-katello: Katello Content View History API Cross-Organization Authorization Bypass     (CVE-2026-79654)
    * nodejs-compression-webpack-plugin: fast-uri: Authority Injection via Unvalidated Port Serialization     (CVE-2026-84292)
    * nodejs-mini-css-extract-plugin: fast-uri: Authority Injection via Unvalidated Port Serialization     (CVE-2026-84292)
    * nodejs-webpack: fast-uri: Authority Injection via Unvalidated Port Serialization (CVE-2026-84292)
    * nodejs-compression-webpack-plugin: fast-uri: Host confusion via unbalanced URI brackets can bypass     security policies (CVE-2026-84394)
    * nodejs-mini-css-extract-plugin: fast-uri: Host confusion via unbalanced URI brackets can bypass security     policies (CVE-2026-84394)
    * nodejs-webpack: fast-uri: Host confusion via unbalanced URI brackets can bypass security policies     (CVE-2026-84394)
    * python3.12-gitpython: GitPython: Remote Code Execution via Git directory impersonation (CVE-2026-87817)
    * foreman: Safemode Bypass leading to RCE (CVE-2026-96658)
    * foreman: Excessive Permissions for Viewer Role on Preview (CVE-2026-96659)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, List#set,
    List#setSize, List#setIn, List#updateIn, and the functional set, setIn, and updateIn mishandle an index or
    size in the range 2 ** 30 to 2 ** 31 in setListBounds in src/List.js, causing an empty List to enter an
    uncatchable infinite loop, a populated List to allocate without bound until process abort, or setSize to
    silently wrap large values. This issue is fixed in versions 4.3.9 and 5.1.8. (CVE-2026-59879)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, List#set,     List#setSize, List#setIn, List#updateIn, and the functional set, setIn, and updateIn mishandle an index or     size in the range 2 ** 30 to 2 ** 31 in setListBounds in src/List.js, causing an empty List to enter an     uncatchable infinite loop, a populated List to allocate without bound until process abort, or setSize to     silently wrap large values. This issue is fixed in versions 4.3.9 and 5.1.8. (CVE-2026-59879)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
362390	RHEL 9 : Satellite 6.19.5 Async Update (Critical) (RHSA-2026:74503)	Nessus	Red Hat Local Security Checks	Local	high
445102	SCA: security update for immutable (GHSA-v56q-mh7h-f735)	Tenable Cloud Security	SCA Checks	Local	high
445102	SCA: security update for immutable (GHSA-v56q-mh7h-f735)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
328706	Linux Distros Unpatched Vulnerability : CVE-2026-59879	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-59879

high

Tenable Plugins

high

high

high

high